I apologize if I didn't give credit where credit was due. I actually don't know who first noticed Willy nor do I know who named him. The only place I've read about him is in the Wall Observer thread, so yes I was too quick in assuming that fellow Wall Observers were the first to notice him.
But your Reddit posts says its from "about a month ago." Weren't we talking about Willy in December on the Wall Observer thread? Does anyone remember when exactly the web and API interface went down and we watched Willy execute trades all alone? Wasn't that November or December? Were we calling him "Willy" at that point?